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| 一种声发射源的新型平面定位方法研究 | |
| 引用本文： | 龚斌,齐辉,马春华,包日东,闻邦椿.一种声发射源的新型平面定位方法研究[J].声学技术,2006,25(2):107-109. |
| 作者姓名： | 龚斌 齐辉 马春华 包日东 闻邦椿 |
| 作者单位： | 1. 沈阳化工学院,沈阳,110142;东北大学机械工程与自动化学院,沈阳,110004 2. 沈阳化工学院,沈阳,110142 3. 东北大学机械工程与自动化学院,沈阳,110004 |
| 基金项目： | 国家自然科学基金资助项目(50075010) |
| 摘 要： | 声发射现象中产生的弹性波在传播时声压遵从指数衰减规律,文中提出一种利用声衰减特性对声发射源进行平面定位的能量定位新方法。从理论上导出了该方法的定位计算公式,并用AE21C型声发射仪在高分子合成纤维平板上以铅笔芯折断产生信号为模拟源进行了实验测量,证明这种新的源定位方法可行,并具有无须测量传声媒质的声衰减和声速等优点。 |
| 关 键 词： | 声发射 声衰减 源定位 能量 |
| 文章编号： | 1000-3630（2006）-02-0107-03 |
| 收稿时间： | 2005-09-14 |
| 修稿时间： | 2005-09-142005-11-03 |
A new method of energy location for acoustic emission source |
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| GONG Bin,QI Hui,MA Chun-hu,BAO Ri-dong and WEN Bang-chun.A new method of energy location for acoustic emission source[J].Technical Acoustics,2006,25(2):107-109. | |
| Authors: | GONG Bin QI Hui MA Chun-hu BAO Ri-dong and WEN Bang-chun |
| Affiliation: | 1.Shenyang Institute of Chemical Technology, Shenyang 110142, China; 2. School of Mechanic Engineering and Automation, Northeast University, Shenyang 110004, China |
| Abstract: | A new method of energy location for acoustic emission source is proposed by using the acoustic attenuation property based on the exponential attenuation rule for elastic waves propagation in the acoustic emission.The equation is derived,and experiment measurements using signals of pencil core fracture as the source conducted in a plane of high polymer synthetic fiber.Feasibility of the new source location method is confirmed.The method does not need measurement of the attenuation property of the medium and the sound speed. |
| Keywords: | acoustic emission acoustic attenuation source location energy |
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